Adolescent sleep is a significant predictor of health and wellness, including mental and physical health. Proper sleep is not only determined by the amount of time, but also by quality and consistency. Various factors can impact how adolescents sleep, including biological changes, familial structure/relationships, school demands, and technology. Insufficient sleep is associated with depression, anxiety, increased emotional reactivity, lower academic achievement, and a higher risk of suicidal ideations and attempts. Short and long-term physical health effects include an increased risk of cardiovascular disease, obesity, diabetes, and impaired immune function.
Source: Center for the Developing Adolescent: https://developingadolescent.org/topics/item/science-of-adolescent-sleep